CN104682344B - A kind of electric wiring catches fire early warning protector - Google Patents
A kind of electric wiring catches fire early warning protector Download PDFInfo
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- CN104682344B CN104682344B CN201510143157.4A CN201510143157A CN104682344B CN 104682344 B CN104682344 B CN 104682344B CN 201510143157 A CN201510143157 A CN 201510143157A CN 104682344 B CN104682344 B CN 104682344B
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Abstract
The present invention proposes that a kind of electric wiring catches fire early warning protector, including the first fire, zero line side, and it connects the contact of the first relay two respectively；Two resistance of series connection, 3rd resistor and above-mentioned resistor coupled in parallel are drawn from above-mentioned two contact；The diode and two electric capacity of series connection are drawn from above-mentioned two contact；The contact of the second relay two is drawn respectively in diode the two poles of the earth；Overvoltage/undervoltage and power input discriminating unit are connected to the second relay and its second contact；Its first contact portion to electric energy metrical detection unit, unit is connected to current sensor；The sensor, overcurrent discriminating unit, the 3rd relay, leakage current test unit are sequentially connected；The sensor is through the 3rd the first contact portion of relay to zero sequence current mutual inductor；The transformer is respectively connecting to leakage current test unit, the second fire, zero line side, the 3rd the second contact of relay；Second contact is additionally coupled to first the second contact of relay.Above-mentioned protector can play preferable protective effect to electric wiring.
Description
Technical field
Power supply electricity can be cut off in time when electric wiring breaks down the present invention relates to electric field, more particularly to one kind
The electric wiring in source catches fire early warning protector.
Background technology
With the fast development of Chinese national economy, the rapid raising of living standards of the people, electrical equipment substantial increase is used
Electricity also increases year by year, and the electrical fire that electric wiring is caused directly or indirectly is consequently increased.For a long time, electric wire pass
The fire of hair on a large scale and with having no sign frequently occurs, and can cause many casualties, a large amount of economic asset heavy losses,
Particularly in high buildings and large mansions building, the difficulty that fights a fire is bigger.Electric wiring triggers leading cause of fire to be house circuit
The larger surge electricity that the over-pressed, under-voltage of electric wire, overload, excessively stream, line short, electric leakage, and electric power starting or closing are evoked
Stream and inverse peak voltage, its consequence will necessarily burn into impact, burn, damage and burn household electrical appliance, so as to trigger fire.
In the prior art, electric wiring protection device mostly just for short circuit, overheat, thunderbolt situations such as and design,
When occurring various faults in electric wiring, protection device of the prior art can not play a very good protection, and still having can
Fire hazard.
The content of the invention
In order to overcome the deficiencies in the prior art, the present invention proposes a kind of electric wiring and caught fire early warning protector, so as to energy
It is enough that corresponding safeguard measure is taken according to various faults situation, it can be good at preventing electric wiring from triggering fire incident.
To achieve these goals, the present invention proposes a kind of electric wiring and caught fire early warning protector, the protector bag
The first live wire connection end, the first zero line connection end are included, the first live wire connection end extraction wire is connected to the first relay
First contact, the first zero line connection end extraction wire is connected to the second contact of the first relay；From first relay
The first piezo-resistance and the second piezo-resistance of series connection are drawn in first contact of device and the second contact, the 3rd piezo-resistance with it is above-mentioned
Series circuit is in parallel；The first diode of series connection, first are also drawn from the first contact and the second contact of first relay
Electrochemical capacitor and the second electrochemical capacitor；The positive pole of first diode draws the first contact of the second relay, described first
The negative pole of diode draws the second contact of the second relay；Second contact of second relay was connected in closure
Under-voltage discriminating unit is pressed, power input discriminating unit is connected to when disconnecting；The over-and under-voltage discriminating unit and power input
Discriminating unit is connected to the second relay；First contact of second relay is additionally coupled to electric energy metrical detection unit,
The electric energy metrical detection unit is also connected with display unit, current sensor respectively；The current sensor also respectively with
Overcurrent discriminating unit, the first contact of the 3rd relay are connected；The overcurrent discriminating unit is connected with the 3rd relay
Connect；The 4th piezo-resistance is drawn between the current sensor and the 3rd the first contact of relay and is connected to the first relay
Second contact；First contact of the 3rd relay is additionally coupled to zero sequence current mutual inductor；The of the 3rd relay
The second contact that the 5th piezo-resistance is connected to the 3rd relay is drawn between one contact and zero sequence current mutual inductor；Described 3rd
Second contact of relay is additionally coupled to the second contact of the first relay；The zero sequence current mutual inductor also distinguishes extraction wire
It is connected to the second contact, leakage current test unit, the second live wire connection end and the second zero line connection end of the 3rd relay；Institute
Leakage current test unit is stated also with the 3rd relay to be connected；Connected in the second live wire connection end and the second zero line
Second resistance and the 3rd electric capacity are connected in series between end；It is pressure-sensitive that first protection ground wire connection end extraction wire is connected to described first
Between resistance and the second piezo-resistance；The second protection is used as from the described first protection ground wire connection end also extraction wire to output end
Ground wire connection end.
Preferably, the protector also includes acousto-optic warning unit, the acousto-optic warning unit and the over-and under-voltage
Discriminating unit is connected, and it, which is also drawn first resistor and is connected to the second of the 5th piezo-resistance and the 3rd relay, touches
Between point, the acousto-optic warning unit includes light emitting diode and loudspeaker.
The beneficial effect of the program of the present invention is that above-mentioned protector can take corresponding according to various faults situation
Safeguard measure, can be good at preventing electric wiring from triggering fire incident.
Brief description of the drawings
Fig. 1 shows that electric wiring involved in the present invention catches fire the principle schematic of early warning protector.
Embodiment
The embodiment to the present invention is further described below in conjunction with the accompanying drawings.
As shown in figure 1, electric wiring involved in the present invention catches fire, early warning protector includes the first live wire connection end L1, uses
In connection external power source, the first live wire connection end L1 extraction wires are connected to the first contact K1-1 of the first relay；This
The involved electric wiring of invention catches fire early warning protector also including the first zero line connection end N1, for connecting external power source, institute
State the second contact K1-2 that the first zero line connection end N1 extraction wires are connected to the first relay；From the of first relay
One contact K1-1 and the second contact K1-2 draws the first piezo-resistance RT1 and the second piezo-resistance RT2 of series connection, the 3rd pressure-sensitive electricity
Hinder RT3 in parallel with above-mentioned series circuit；String is also drawn from the first contact K1-1 and the second contact K1-2 of first relay
The first diode D1, the first electrochemical capacitor C1 and the second electrochemical capacitor C2 of connection；The positive pole of the first diode D1 draws the
Two relay K2 the first contact K2-1, the first diode D1 negative pole draw the second relay K2 the second contact K2-
2；The second contact K2-2 of the second relay K2 is connected to over-and under-voltage discriminating unit 1 in closure, is connected when disconnecting
To power input discriminating unit 2；The over-and under-voltage discriminating unit 1 and power input discriminating unit 2 are connected to the second relay
Device K2；The first contact K2-1 of the second relay K2 is additionally coupled to electric energy metrical detection unit 3, the electric energy metrical detection
Unit 3 is also connected with display unit 4, current sensor 5 respectively；The current sensor 5 also differentiates single with overcurrent respectively
The 6, the 3rd relay K3 of member the first contact K3-1 is connected；The overcurrent discriminating unit 6 is connected with the 3rd relay K3；
First is connected to from the 4th piezo-resistance RT4 is drawn between the first contacts of the relay K3 K3-1 of current sensor 5 and the 3rd
Second contact K1-2 of relay；The first contact K3-1 of the 3rd relay K3 is additionally coupled to zero sequence current mutual inductor 8；
The 5th piezo-resistance RT5 is drawn between the first contact K3-1 and zero sequence current mutual inductor 8 of the 3rd relay K3 to be connected to
Second contact K3-2 of the 3rd relay；Second contact K3-2 of the 3rd relay is additionally coupled to the second of the first relay
Contact K1-2；Also extraction wire is connected to the second contact K3-2 of the 3rd relay, electric leakage to the zero sequence current mutual inductor 8 respectively
Flow detection unit 9, the second live wire connection end L2 and the second zero line connection end N2；The leakage current test unit 9 also with it is described
3rd relay K3 is connected；Has been connected in series between the second live wire connection end L2 and the second zero line connection end N2
Two resistance R2 and the 3rd electric capacity C3；The second live wire connection end L2 and the second zero line connection end N2 is used to connect electrically to set
It is standby；First protection ground wire connection end PE1 is used to connect external power source, and the first protection ground wire connection end PE1 extraction wires connect
It is connected between the first piezo-resistance RT1 and the second piezo-resistance RT2；Also draw from the described first protection ground wire connection end PE1
Go out wire to output end as the second protection ground wire connection end PE2, to connect electrical equipment.
Electric wiring involved in the present invention catches fire early warning protector also including acousto-optic warning unit 7, the sound and light alarm
Unit 7 includes LED 1 and loudspeaker B1, the acousto-optic warning unit 7 and the over-and under-voltage discriminating unit 1
It is connected, it also draws the second contact that first resistor R1 is connected to the 5th piezo-resistance RT5 and the 3rd relay
Between K3-2, the LED 1 and is connected to the second contact of the first relay by the control of acousto-optic warning unit 7
K1-2。
In specific application process, the first live wire connection end L1, the first zero line connection end N1 and the first protecting field
Line connection end PE1 connection external ac power sources；The second live wire connection end L2, the second zero line connection end N2 and the second protection
Ground wire connection end PE2 connection electrical equipments.
After external AC power supply, manually the first contact K1-1 of the first relay and the second contact K1-2 is closed；The
The filter circuit that one piezo-resistance RT1, the second piezo-resistance RT2 and the 3rd piezo-resistance RT3 are formed is used to filter out by thunder and lightning
Inverse peak voltage produced by the pulse voltage of generation and power supply open and close；The first diode D1, the first electrochemical capacitor C1 and
The current rectifying and wave filtering circuit of second electrochemical capacitor C2 formation is used to external alternating voltage being converted into DC voltage, is easy to the mistake
Under-voltage discriminating unit 1 and power input discriminating unit 2 is pressed to carry out the discriminating of voltage；4th piezo-resistance RT4 and the 5th pressure-sensitive electricity
Resistance RT5 formation secondary filtering circuit be used for it is secondary filter out the pulse voltage produced as thunder and lightning and power supply open and close produced by
Inverse peak voltage；The circuit of second resistance R2 and the 3rd electric capacity C3 formation is used to reduce surge current.
Electric wiring involved in the present invention catch fire early warning protector operation principle it is as follows：Assuming that under original state, institute
The the first contact K2-1 and the second contact K2-2 for stating the second relay K2 are closed；The first contact of the 3rd relay K3
K3-1 and the second contact K3-2 are closed.External alternating current first through the first piezo-resistance RT1, the second piezo-resistance RT2 and
The wave filter of 3rd piezo-resistance RT3 formation is filtered, to filter out the pulse voltage produced by thunder and lightning and power supply open and close
Produced inverse peak voltage；Filtered alternating current is divided into two-way, all the way the first contact K2-1 conveyings through the second relay K2
To electric energy metrical detection unit 3, the electric energy metrical detection unit 3 can carry out quantitative analysis to the alternating current that input is come in, and
Analytical structure is shown in display unit 4, specific display content includes the parameter informations such as voltage, electric current, power；Another road
Alternating current is carried out through the first diode D1, the first electrochemical capacitor C1 and the second electrochemical capacitor C2 current rectifying and wave filtering circuit formed
Rectifying and wave-filtering, second contact K2-2 of the direct current formed afterwards through the second relay K2 is delivered to over-and under-voltage discriminating unit 1,
When the voltage that conveying comes is through differentiating between 200V ~ 240V, show that power supply is in normal power supply state, the over-and under-voltage
Discriminating unit 1 will not control the second relay K2 and acousto-optic warning unit 7 to act；When the voltage that conveying comes is less than through differentiating
When 180V/ is more than 250V, show that power supply is in under-voltage condition/overvoltage condition, the over-and under-voltage discriminating unit 1 can control second
Relay K2 is acted, and the first contact K2-1 and the second contact K2-2 of the second relay K2 is disconnected so that described the
Two contact K2-2 are connected to power input discriminating unit 2, and control the acousto-optic warning unit 7 to act, and make the loudspeaker
B1 sounds the alarm, and LED 1 lights.The weight after the voltage that conveying comes differentiates through the power input discriminating unit 2
New when returning between 200V ~ 240V, the power input discriminating unit 2 can control the first contact of the second relay K2
K2-1 and the second contact K2-2 are closed, and recover normal power supply state.
Alternating current is delivered to the current sensor 5, the meeting of current sensor 5 by the electric energy metrical detection unit 3
Above-mentioned alternating current is delivered into overcurrent discriminating unit 6 to be differentiated, when the electric current that conveying comes is less than 20A through differentiating, shown
Line load is normal, and the overcurrent discriminating unit 6 will not control the 3rd relay K3 to act；When the next electric current of conveying is through differentiating
In 20A ~ 25A, show that line load exceedes threshold value, the overcurrent discriminating unit 6 can control the 3rd relay K3 to act, make
The the first contact K3-1 and the second contact K3-2 of the 3rd relay K3 disconnects, when the second contact K3-2 disconnects,
The first resistor R1 voltages out of hand, trigger the acousto-optic warning unit 7 and act, the loudspeaker B1 is sent alarm
Sound, LED 1 lights.Come back to and be less than after the electric current that conveying comes differentiates through the overcurrent discriminating unit 6
During 20A, the overcurrent discriminating unit 6 can control the first contact K3-1 and the second contact K3-2 of the 3rd relay K3 equal
Closure, recovers normal power supply state.
The current sensor 5 by alternating current through zero sequence current mutual inductor 8 be delivered to the second live wire connection end L2 and
Second zero line connection end N2；Above-mentioned alternating current is also delivered to leakage current test unit 9 and examined by the zero sequence current mutual inductor 8
Survey, when its leakage current is 0 to the alternating current that conveying comes after testing, show that no personnel get an electric shock, the leakage current test unit 9 will not
The 3rd relay K3 is controlled to act；When the alternating current that conveying comes, its leakage current is less than 30 MAHs after testing, shows have personnel to touch
Electricity, the leakage current test unit 9 can control the 3rd relay K3 to act, and make the first contact K3-1 of the 3rd relay K3
Disconnected with the second contact K3-2, when the second contact K3-2 disconnects, the first resistor R1 voltages out of hand, triggering
The acousto-optic warning unit 7 is acted, and the loudspeaker B1 is sounded the alarm, and LED 1 lights.When failure row
After removing, then powered by manual reversion.
The electric wiring involved in the present invention early warning protector that catches fire can take corresponding according to various faults situation
Safeguard measure, can be good at preventing electric wiring from triggering fire incident.
Claims (2)
- The early warning protector 1. a kind of electric wiring catches fire, it is characterised in that：The protector includes the first live wire connection end, first Zero line connection end, the first live wire connection end extraction wire is connected to the first contact of the first relay, first zero line Connection end extraction wire is connected to the second contact of the first relay；From the first contact and the second contact of first relay The first piezo-resistance and the second piezo-resistance of series connection are drawn, the 3rd piezo-resistance is in parallel with above-mentioned series circuit；From described The first diode, the first electrochemical capacitor and the second electrolysis electricity of series connection are also drawn in the first contact and the second contact of one relay Hold, wherein the positive pole of first diode is connected with the first contact of first relay, first diode Negative pole is connected with first electrochemical capacitor；The positive pole of first diode draws the first contact of the second relay, institute The negative pole for stating the first diode draws the second contact of the second relay；Second contact of second relay connects in closure Over-and under-voltage discriminating unit is connected to, power input discriminating unit is connected to when disconnecting；The over-and under-voltage discriminating unit and electricity Source input discriminating unit is connected to the second relay；First contact of second relay is additionally coupled to electric energy metrical detection Unit, the electric energy metrical detection unit is also connected with display unit, current sensor respectively；The current sensor also divides The first contact not with overcurrent discriminating unit, the 3rd relay is connected；The overcurrent discriminating unit and the 3rd relay It is connected；The 4th piezo-resistance is drawn between the current sensor and the 3rd the first contact of relay and is connected to the first relay Second contact of device；First contact of the 3rd relay is additionally coupled to zero sequence current mutual inductor；In the 3rd relay The first contact and zero sequence current mutual inductor between draw the 5th piezo-resistance and be connected to the second contact of the 3rd relay；It is described Second contact of the 3rd relay is additionally coupled to the second contact of the first relay；The zero sequence current mutual inductor is also drawn respectively Wire is connected to the second contact, leakage current test unit, the second live wire connection end and the connection of the second zero line of the 3rd relay End；The leakage current test unit is also connected with the 3rd relay；In the second live wire connection end and the 2nd 0 Second resistance and the 3rd electric capacity are connected in series between line connection end；First protection ground wire connection end extraction wire is connected to described the Between one piezo-resistance and the second piezo-resistance；The is used as from the described first protection ground wire connection end also extraction wire to output end Two protection ground wire connection ends.
- The early warning protector 2. the electric wiring according to claim 1 catches fire, it is characterised in that：The protector also includes Acousto-optic warning unit, the acousto-optic warning unit is connected with the over-and under-voltage discriminating unit, and it also draws first resistor company It is connected between the 5th piezo-resistance and the second contact of the 3rd relay, the acousto-optic warning unit includes luminous two Pole pipe and loudspeaker.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510143157.4A CN104682344B (en) | 2015-03-30 | 2015-03-30 | A kind of electric wiring catches fire early warning protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510143157.4A CN104682344B (en) | 2015-03-30 | 2015-03-30 | A kind of electric wiring catches fire early warning protector |
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| Publication Number | Publication Date |
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| CN104682344A CN104682344A (en) | 2015-06-03 |
| CN104682344B true CN104682344B (en) | 2017-09-15 |
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| CN201510143157.4A Active CN104682344B (en) | 2015-03-30 | 2015-03-30 | A kind of electric wiring catches fire early warning protector |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109754567A (en) * | 2019-01-23 | 2019-05-14 | 福建师范大学 | A kind of flame detector operating circuit |
| CN110429561B (en) * | 2019-08-28 | 2021-11-05 | 华邦创科(惠州市)智能科技有限公司 | Intelligent protection device for electrical fire |
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| JPH10191552A (en) * | 1996-12-25 | 1998-07-21 | Fuji Electric Co Ltd | Overvoltage detection circuit for earth leakage breaker |
| CN201051653Y (en) * | 2006-12-21 | 2008-04-23 | 刘在能 | Automatic controller for multi-function electric current leakage fire |
| CN101431226A (en) * | 2007-11-05 | 2009-05-13 | 鸿富锦精密工业（深圳）有限公司 | Power supply protection circuit |
| CN101685959A (en) * | 2008-09-27 | 2010-03-31 | 湖南欧美加昇科技发展有限公司 | Electrical intelligent fire disaster protector |
| CN203859338U (en) * | 2014-05-16 | 2014-10-01 | 西安芯派电子科技有限公司 | Power strip inhibiting surge voltage and current |
| CN104218619A (en) * | 2014-09-15 | 2014-12-17 | 深圳市福瑞康电子有限公司 | Intelligent power supply device |
| CN204424867U (en) * | 2015-03-30 | 2015-06-24 | 威海人合机电股份有限公司 | Electric wiring catches fire early warning protector |
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2015
- 2015-03-30 CN CN201510143157.4A patent/CN104682344B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10191552A (en) * | 1996-12-25 | 1998-07-21 | Fuji Electric Co Ltd | Overvoltage detection circuit for earth leakage breaker |
| CN201051653Y (en) * | 2006-12-21 | 2008-04-23 | 刘在能 | Automatic controller for multi-function electric current leakage fire |
| CN101431226A (en) * | 2007-11-05 | 2009-05-13 | 鸿富锦精密工业（深圳）有限公司 | Power supply protection circuit |
| CN101685959A (en) * | 2008-09-27 | 2010-03-31 | 湖南欧美加昇科技发展有限公司 | Electrical intelligent fire disaster protector |
| CN203859338U (en) * | 2014-05-16 | 2014-10-01 | 西安芯派电子科技有限公司 | Power strip inhibiting surge voltage and current |
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| CN204424867U (en) * | 2015-03-30 | 2015-06-24 | 威海人合机电股份有限公司 | Electric wiring catches fire early warning protector |
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| CN104682344A (en) | 2015-06-03 |
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Denomination of invention: Electrical circuit fire early-warning protector Effective date of registration: 20190122 Granted publication date: 20170915 Pledgee: Weihai City Commercial Bank Limited by Share Ltd high tech branch Pledgor: Weihai HHH Electromechanical Co., Ltd. Registration number: 2017990000889 |
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Date of cancellation: 20220422 Granted publication date: 20170915 Pledgee: Weihai City Commercial Bank Limited by Share Ltd. high tech branch Pledgor: WEIHAI HHH COOPERATION MACH.&ELEC. CO.,LTD. Registration number: 2017990000889 |